package com.student.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.student.DBConn;
import com.student.service.UserService;

public class LoginServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public LoginServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
	}

	/**
	 * The doGet method of the servlet. <br>
	 * 
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request
	 *            the request send by the client to the server
	 * @param response
	 *            the response send by the server to the client
	 * @throws ServletException
	 *             if an error occurred
	 * @throws IOException
	 *             if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		PreparedStatement sql;
		ResultSet rs;

		response.setContentType("text/html");
		request.setCharacterEncoding("UTF-8");
		response.setCharacterEncoding("UTF-8");
	
		PrintWriter out = response.getWriter();
	
		String userName = request.getParameter("userName");
		String password = request.getParameter("password");
		System.out.println(userName+"--"+password);
		if (userName == null || password == null) {
			out.print("failed");
		} else {
			String result = null;
			try {
				result = UserService.confirm(userName, password).trim();
			} catch (SQLException e) {
				e.printStackTrace();
			}
			if ("failed".equals(result)) {
				out.print("failed");
			} else {
				out.print("success,"+result);
			}
			System.out.println(result);
		}
		out.flush();
		out.close();

	}

	/**
	 * The doPost method of the servlet. <br>
	 * 
	 * This method is called when a form has its tag value method equals to
	 * post.
	 * 
	 * @param request
	 *            the request send by the client to the server
	 * @param response
	 *            the response send by the server to the client
	 * @throws ServletException
	 *             if an error occurred
	 * @throws IOException
	 *             if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);
	}

	/**
	 * Initialization of the servlet. <br>
	 * 
	 * @throws ServletException
	 *             if an error occurs
	 */
	public void init() throws ServletException {
	}

}
